302 



Slnscles of the Arm. 

 Processus coracoideus 



Claviciila (cut through) 



M. lU'ltoideiis 



!M. corato- ._ 

 brachialis 



Caput brive 

 ni. bicipitis -- 

 brachii 



Caput longum 



ni. bicipitis 



lirachii 



M. triceps 

 bratliii 



Sulcus 



bicipitalis 



lateralis 



M. 



bi':irlii(ir:iiliiilis 



Angulus" 

 luedialis scapulae 



Marge 



vertebralis 



scapulae 



M. sub- 

 scapularis 



M. teres major 



carpi 

 adialis 



M. latissimus 

 dorsi 



347. Muscles 

 of the right upper 



a.rrn, viewed from in front. 



M. coracobraehialis (see Figs. 

 310, 343, 340 ami 348). Form: flat, 

 obloiig-qnadrang'ular. Position: in 

 the axilla, covered in front by the 

 m. pectoralis major, laterahvard and 

 in front adjoining- the caput hreve 

 m. bicipitis, behind adjoining the m. 

 subscapularis and the tendons of the 

 ram. latissimus dorsi and teres major: 

 below on the medial surface of the 

 upper arm, between the m. biceps and 

 the caput mediale of the m. tricej)s. 

 Origin: tendinous from the proc. 

 coracoideus scapulae, being fused 

 there with the caput breve m. bici- 

 pitis (bursa m. coracobraehialis see 

 Fig. 345). Insertion : the fibers run 

 perpendicularly to the margo raedialis 

 humeri, just Ixdow its middle, being 

 often partially fused there with tlie 

 m. brachialis. Action: it hfts the 

 upper arm forward. T n ii i^ r v a t i (Ui : 

 11. luusculocutanous. 



